I've played both squash and run. I've found that neither has particularly pushed levels up, but after a hard game of squash, I often need a glucose boost. With running, I tend to try and start around 10mmol/l, and typically I get about 4 miles at my average pace before needing to boost and then I need 10g of carb per mile on my normal basal.
The other thing to watch out for is the part exercise insulin hangover. I've exercised late and then gone to bed, and discovered a late night hypo. I have to reduce basal in that scenario as my body becomes more insulin sensitive for four or five hours.